Anonymized project note
Filter Cloth Replacement for Coal Washing Sludge with Repeated Blinding
Coal washing sludge can blind filter cloth quickly when particle size, washing frequency and cloth structure are not matched. DOFIL reviewed the old cloth sample, plate type, cake release and cleaning condition before recommending a replacement cloth route.
Project overview
This case is written for plant maintenance teams, distributors and equipment buyers comparing whether a similar DOFIL supply route could work for their own site. Customer names and exact production figures are not published, but the application logic and quotation checks are kept practical.
- Project date
- 2025-11-12
- Project location
- Coal washing plant
- Application
- Coal fines and sludge filtration
- Operating duty
- Replacement supply for repeated filter press cycles
- DOFIL supply scope
- PP filter cloth, neck size confirmation, sewing detail, sample matching
Before quotation, the important question was fit
The plant wanted more predictable cloth performance without changing the filter press. The existing cloth life was unstable and the maintenance team needed a repeatable cloth specification.
For this kind of request, the useful work happens before a price is sent. A similar-looking product can still fail at site if the working pressure, feed material, interface size, sealing surface, filter cloth or packing method is not checked. That is why this case was handled as a technical replacement record, not a simple catalog selection.
How DOFIL approached the supply plan
- Collected old cloth photos, sample information and plate dimensions.
- Reviewed cake release, washing frequency, particle condition and operating pressure.
- Confirmed neck size, edge treatment and sewing requirements for the existing plates.
- Prepared a replacement cloth specification suitable for future repeat orders.
Main products and technical focus
- PP filter clothConfirmed against the project duty before quotation.
- Sewn filter cloth for chamber platesConfirmed against the project duty before quotation.
- Replacement cloth sample recordConfirmed against the project duty before quotation.
What changed for the buyer
Exact operating data is not published without the customer's permission. The practical result of this case is that the buyer had a clearer basis for technical confirmation, repeat supply and future maintenance planning.
- The buyer gained a clearer cloth specification for repeat maintenance.
- Installation details were checked before shipment.
- Cloth selection was tied to real blinding and cake-release problems.
Photos used to explain the project
Project photos are useful because they show the product environment. They help buyers compare plate size, equipment layout, packing method, cloth installation and maintenance access before starting a similar inquiry.
Questions this case helps answer
Can DOFIL quote only from a product name?
Usually not accurately. For replacement parts and filter press systems, photos, drawings, size, pressure, material and application details make the quotation safer.
Why are customer names not shown in every case?
Many industrial buyers do not allow supplier websites to publish plant names or production data. The case still keeps the useful technical logic: application, problem, supply scope and confirmation route.
What should a buyer prepare for a similar project?
Useful information includes machine model, old product photos, drawings, main dimensions, slurry material, working pressure, temperature, quantity and delivery plan.